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Body proportions in Fanconi anemia heterozygotes
S Mohan1, P Lakshminarayanan, P Sowmya
1Institute of Child Health and Hospital for Children, Chennai. mpmohan@vsnl.com
Insights
Parents carrying Fanconi anemia gene mutations show distinct anthropometric differences. Male heterozygotes have altered upper arm to forearm ratios, while female heterozygotes exhibit changes in head and interpupillary measurements.
Area of Science:
- Genetics
- Anthropometry
- Hematology
Background:
- Fanconi anemia (FA) is a rare genetic disorder.
- Heterozygous carriers of FA mutations may exhibit subtle phenotypic differences.
- Understanding these differences can aid in carrier identification and genetic counseling.
Purpose of the Study:
- To investigate anthropometric ratios in parents (heterozygotes) of children diagnosed with Fanconi anemia.
- To identify potential physical markers associated with Fanconi anemia gene carriage.
Main Methods:
- Cross-sectional study involving 31 fathers and 37 mothers of children with Fanconi anemia.
- Comparison of anthropometric measurements and calculated ratios with 100 age- and ethnicity-matched controls.
- Statistical analysis of recorded body measurements and derived ratios.
Main Results:
- Fathers (male heterozygotes) demonstrated significantly increased upper arm to forearm length ratios compared to male controls.
- Mothers (female heterozygotes) showed increased interpupillary distance and decreased head circumference to interpupillary distance ratios compared to female controls.
Conclusions:
- Specific anthropometric ratios differ between Fanconi anemia heterozygote parents and controls.
- These findings suggest potential physical indicators for Fanconi anemia carrier status.
- Further research is warranted to validate these anthropometric markers for clinical application.
Abstract:
To study the anthropometric ratios in parents (heterozygotes) of children with Fanconi anemia. The study was carried out in the Department of Hematology, Institute of Child Health & Hospital for Children, Chennai. Parents of children with Fanconi anemia were the subjects of the study. Applying standard instruments and methods, various body measurements were recorded. 31 fathers and 37 mothers were included in the study. A hundred male and female controls of the same ethnic group were also studied for the same parameters. The ratios were calculated and statistically analyzed. It was observed that fathers (male heterozygotes) had shorter forearms, the ratio of upper arm: forearm was significantly increased compared to male controls. In mothers (female heterozygotes) the inter-pupillary distance was increased, the ratio of head circumference to inter-pupillary distance was decreased compared to female controls.